In this section we study the compression ratio of \(\text{ReLZ}\) . We store the \(pos\)  and \(len\)  values
in separate files, encoding them using a modern implementation of PFOR codes [1]}
in combination with a fast entropy coder [2]}.
We compare against state of the art compressors (LZMA, Brotli) and also agains a very recent
RLZ compressor (RLZ-store). We measure compression ratios, compression times and decompression times
of these tools in the large collections, whose size exceeds the available RAM of the system.
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